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    A 3-stage treatment system for domestic wastewater: Part II. Performance evaluation

    196462_106502_Part_2_Performance_evaluation.pdf (562.7Kb)
    Access Status
    Open access
    Authors
    Oon, Yin Wee
    Law, Puong Ling
    Ting, Sim Nee
    Tang, Fu Ee
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Oon, Yin Wee and Law, Puong Ling and Ting, Sim Nee and Tang, Fu Ee. 2013. A 3-stage treatment system for domestic wastewater: Part II. Performance evaluation. UNIMAS E-journal of Civil Engineering. 4 (1): pp. 26-31.
    Source Title
    UNIMAS e-journal of Civil Engineering
    Additional URLs
    http://www.feng.unimas.my/ujce/images/article/volume12013/paper%204encrypted.pdf
    ISSN
    19853874
    Remarks

    Copyright © 2013 Universiti Malaysia Sarawak

    URI
    http://hdl.handle.net/20.500.11937/3247
    Collection
    • Curtin Research Publications
    Abstract

    A 3-stage micro-scale wastewater treatment system that consisted of 1) a spiral-framed human hair-based filter, 2) a plastic medium mixed flow biotower, and 3) a free surface water wetland system filled with Pistia Stratiotes (water lettuce) operating in series was recently developed and performance tests were conducted. Performance tests were carried out to determine the efficiencies of the system for removal of physically emulsified and free oils, organic matters such as biochemical oxygen demand, ammoniacal-nitrogen, suspended solids, and nutrients such as nitrogen, phosphorus and potassium from semi-synthetic wastewaters. From this study, it was found that the human hair-based filter could retain approximately 73.5% of physically emulsified oils, while the mixed flow biotower was capable of reducing approximately 35.0% biochemical oxygen demand, 57.4% ammoniacal-nitrogen, 51.8% nitrogen, 13.4% phosphorus, 21.8% potassium, and 21.9% reduction in turbidity. The Pistia Stratiotes-based free surface water wetland was found to remove approximately 24.1% biochemical oxygen demand, 30.6% ammoniacal-nitrogen, 38/0% nitrogen, 41.5% phosphorus, 46.7% potassium and 31.7% reduction in turbidity. When the mixed flow biotower and free surface water wetland system were to operate in series, the combined removal efficiencies were approximately 59.2% for biochemical oxygen demand, 87.9% for ammoniacal-nitrogen, 90.6% for nitrogen, 54.9% for phosphorus, 68.5% for potassium, and 59.0% reduction in turbidity. Experimental data also showed that daily uptake rates (mg/kg-day) of organics and nutrients by per kilogram of Pistia Stratiotes were approximately 1,731 mg for biochemical oxygen demand, 1,015 mg for ammoniacal-nitrogen, 1,206 mg for nitrogen, 1,468 mg for phosphorus, and 5,431 mg for potassium.

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